Gustaf hilarius hellgren



July 16, 1935. G. H. HELLGREN 2,008,355

TENS CARRYING MECHANISM FOR CALCULATING MACHINES AND THE LIKE APPARATUSFiled NOV. 14. 1951 I 4 Sheets-Sheet l fga y 1935; G. H. HELLGREN2,@8,355

TENS CARRYING MECHANISM FOR CALCULATING MACHINES AND THE LIKE APPARATUSFiled Nov. 14, 1931 4 Sheets-Sheet 2 y 6, 1935. e. H. HELLGREN 2,Q@8,355

NES AND THE LIKE APPARATUS TENS CARRYING MECHANISM FOR CALCULATING MACHFiled NOV. 14. 1931 4 Sheets-Sheet 3 July 1935- G. H. HELLGREN 270081355TENS CARRYING MECHANISM FOR CALCULATING MACHINES AND THE LIKE APPARATUSFiled Nov. 14, 1931 4 Sheets-Sheet 4 Patented July 16, 1935 PATENTOFFICE TENS-CARRYING MECHANISM FOR CAL- CULATING MACHINES AND THE LIKEAPPARATUS Gustaf Hilarius Hellgren, Vallentuna, Sweden, assignor ofone-half to Ernst Valfrid Gustafsson, Stockholm, Sweden ApplicationNovember 14, 1931, Serial No. 575,075

' In Germany November 21, 1930 12 Claims.

The present invention relates to a tens-carrying mechanism forcalculating machines, cashregisters and similar machines having addingor subtracting counters, in which the various orders may be operatedindependently of the other orders, so that a tens-carrying operation maybe carried out in each order separately. In general, the tendency is tocarry out the tens-carrying operation in a compulsory manner, and forthis purpose it has already been proposed to utilize special gearings inengagement with the gear wheels of the counters, special arrangementsbeing provided, by means of which the gear wheels of the counters arekept under a certain tension, in order to eliminate the usual playbetween the teeth of the gears in engagement with each other. Sucharrangements are, however, very complicated and in certain cases thisarrangement is dependent on spring-power action.

According to the present invention, the tenscarrying operation iselfected for each single order in a compulsory manner and at the sametime the third following order is prepared for performing atens-carrying operation independently of movements of rotatable parts inthe second order.

The chief feature of the invention thus consists in that on releasingthe tens-carrying member for a second order by the preceding unit thetens-carrying member for the third order is set into a position fromwhich. it may be released or in certain cases is entirely released,independently of movements of rotatable parts of the second order.

released by the preceding or first order, is adapted to act upon alocking device for the tens-carrying member of the third order in such amanner, that this latter member is set into position from which it maybe released or in certain cases is entirely released. The locking devicesubstantially consists of two locking levers, one of which releases,when the pertaining unit carries over from 9 to 0 (or vice versa from 0to 9), the tenscarrying member for the following order, and the otherlever releases said tens-carrying member, when the pertaining unitoccupies the position 9 (during addition) or the position 0 (duringsubtraction), the first named lever also being ar- I ranged to beactuated by the tens-carrying member belonging to the preceding order.

some forms of embodiment of the invention will be described in thefollowing with reference to the accompanying drawings, in which Figure 1is a lateral View of the apparatus ac- For this purpose thetens-carrying member associated with the second order and cording to theinvention in its initial position, one side wall being removed toclearly show the interior parts.

Fig. 2 is an end view of the apparatus shown in Fig. 1.

Fig. 3 shows certain parts of the apparatus in a different position.

Fig. 4 shows the parts of Fig. 3 seen from above.

Fig. 5 shows details of the tens-carrying mechanism in two differentpositions, one position showing the locking device in a released state.

Fig. 6 is a perspective view of the locking levers on a larger scale.

Fig. 7 is a diagrammatic view of a portion of the locking levers in twodifferent positions.

Fig. 8 shows details of a tens-carrying mechanism of a modified form.

Fig. 9 shows a part of Fig. 8 seen from above.

Fig. 10 is a perspective View of a detail of the modified lockingdevice.

Figs. 11 to 13 illustrate the apparatus so as to show the manner inwhich a rock lever of lower order actuates a member of the next higherorder to partly free the transfer member.

In order to make the manner of operation of the tens-carrying mechanismunderstandable, the operation of the units of the calculating mechanismproper will now be explained in connection with a transmitting device.ter proper consists of the numeral wheels I which in usual manner areintegral each with a toothed wheel 2 which is in engagement with anothertoothed wheel 3, in order to render possible the carrying out ofadditions and also of subtractions. The toothed wheels are mounted onspindles 2a and 3a, respectively, journaled in two bridges 5. One of thebridges has an upward extension 4a which is connected by a link 41) to abell crank lever do that is pivoted on a rod 28. By adjustment of thelever 4c, the bridges 4 may be rocked about studs 5 fixed to bridges 29to be described later, so that either of the toothed wheels 2 or 3 maybe brought into engagement with the calculating sectors 6, depending onthe mode of calculation to be carried out. As will be seen from Fig. 3,when carrying out additions, the toothed wheel 3 will be in engagementwith the toothed sector 6, the toothed wheels 2 and 3 rotating in thedirections indicated by the arrows 8 and l,

, respectively, when the toothed sector is rotated in clockwisedirection. During subtractions the conditions are reversed, that is tosay, the toothed wheel 2 will be directly in engagement with the toothedsector 6. The toothed sectors are jour- The counfore no. rollers 26 and2-1.

i 2 around the rod 9 in clockwise direction; At-

the opposite end of the bridges i2 with respect to the rod 9 the bridgesare interconruected by a transverse rod l5 which extends through alltoothed sectors 5 and normally is resting on one of the spokes I6 of thetoothed sectors. One

of the bridges 52 has further an arm I204 at the free end of which isfixed a pin ll surrounded by a longitudinal slot 1311 at the end of alink l8' which is pivoted as at i960, to a crank 19. This crank issecurely fixed to the main shaft 20 f the apparatus." For the'sake ofsimplicity the main shaft 20 is in the present case shown as providedwith a crank 2i operable manually, but it is to be understood that themain shaft also may be driven by motor power.

. When the shaft 2?) is rotated in clockwise direction, obviously thebridges l2; l2 with the extension I20; will, during the first halfrevolution of the shaft 28, be rotated in counter-clockwise direction,so that the rod' i will be removed from the spokesifi of the calculatingsectors 6 which, influenced by'the springs H3, also rotate incounter-clockwise direction about the rod 9.

' Eachitoo-thed sector 6 is provided with an arm 22 extending downwardlyand normally abutting against a rod 23 fixed to the sidewalls 5a; and511. When the sectors 6 are .rotated'in' counterclockwise dire'ction, asjust mentioned, they will abut against a stop devicez i. The stop device24 shown is one of a pluralityofsimilar stop devices which in a mannersimilar to that as illustrated in Figs. 2 and 3' of' the cop'endingapplication Ser. No. 598,647 are set by means of keys on the key boardinto the pathof movement of the arms 22, whereby the sectors are set toa position corresponding to the numeral key pressed down. It is to beunderstood that the invention is not limited to this kind of stopdevices, and further the stop devices as such do not form apart of thepresent invention. On the shaft 20 having rotated 180 and when the shaftnow is further rotated in clockwise direction to the position as shownin Fig. I, obviously the bridges l2 will be rotated in clockwisedirection, and the rod l5 fixed between the bridges carries along thesectors 6 to the initial position, whereby the numerals introduced bythe keys pressed down into the machine, will be transferred to thenumeral wheels i in a manner to be described later.

' In order to bring the numeral wheels.l,that is to say one of thetoothed wheels-2 or 3, into engagement with the toothed sectors 6 duringthe return stroke of the latter, provision has been made for thefollowing. arrangement. To the shaft 28 is securely fixed a cam disk 25which co-operates with two rollers 26 and 21 which are journaled onstuds 245a and 21a, respectively, fixed to the ends of an angular member29a integral with a bridge 29 journaled on a rod 28 attached to the sidewalls to and 51). A similar bridge is journaled on the other end oftherod 28 which,

however, has no angular extension 29a and there- The pivots} about whichthe bridges i for the shafts 2a' and 3a may bell crank 34, 35 journaledon the rod 38.

be rocked are fixed, as stated above, to the bridges 29. The cam disk 25has such a form, that the roller 26, at the initial position of theparts, is pressed away from the shaft 26, so that none of the wheels 2and 3 is in engagement with the sectors 5. As soon as the shaft 28 hasbeen rotated an angle of about 180, the enlarged part of the cam disk 25will move away from the roller 26 and instead thereof will press againstthe roller 21, so that the wheel 3 (or as the case may be the wheel 2)will be brought into engagement with the-sector 6, until finally, at theend of the rotation of the shaft 20, the bridges 29 are again rocked inclockwise direction, thereby bringing the wheel 3 (or the wheel 2) outof engagement with the sector 6. Fig. 3 shows the position of the parts,from which position the sector 6 will be rotated by the rod I5 inclockwise direction away from the stop device 2*: to the initialposition as shown in Fig. l. The numeral wheel I will thus be rotatedproportionally to the angular movement of the sector 6 during the returnstroke of the'latter.

To'the side walls 5a and 5b is'further attached a spindle 30 on whichare joumaled two doublearmed levers 3!. One arm of one of these leversis provided with an open slot 3 to which surrounds a pin 32 fixed to adepending portion 29b of the bridge 29. The other arms of the levers 3!are connected with each other by a rod 33, which extends over the partsbelonging to the tens-carrying mechanism. From the above it will'beclear, that the lever 3i and thereby the rod 33 will be rotated aboutthe rod 30 in the same direction, as the bridges 29 are rocked about therod 28, that is to say, both parts will'simultaneously rotate in'clockwise direction or in counter-clockwise direction.

The tens-carrying mechanism consists of the following parts.

For each order of the'counter there is provided a The arm 35 of'the bellcrank co-operates with the rod 33 attached to the levers 3 I and is bentup at its free end to form a projection is which is adapted toco-operate with a locking device ll to be described later. The free endof the other arm 34 is pivoted at 3411 to a toothed rack 3?. For guidingthis toothed rack 3?! there is provided a rod 38 which has'transversegrooves 38a, through which the racks'8l extend. To the side walls 5aand" springs 40 are attached to an upright part 37a of the racks and toa rod liia fixed to the side walls 5a and 5b. The bell crank 34, 35 .isnormally kept in its initial position by means of a locking device insuch manner, that, when the toothed wheels 2 or 3 are moved out ofengagement with the sector Gin an upward direction (Fig. l) the thematerial of the arm 3 of the bell crank.

The other locking lever M is pivoted at liato a double-armed lever 45which is journaled on a rod 46 attached to the side walls 5a and 51).One arm of this lever 45 has a locking hook 45a to engage with saidprojection and the other arm of the lever 45 has an edge 41 bent atright angles with respect to the plane of the lever 45, and further thearm with this angular part 41 is bent about a vertical plane in such amanner, that the part 41 is in the path of movement of the projection 36on the bell crank 34, belonging to the preceding unit. The locking lever42 has a downward extension 42a, and between this extension and theangular part 41 is attached a spring 48. The locking lever 42 has aprojection 49 for additions and a similar projection 59 forsubtractions. The toothed wheels 2 and 3 are provided with pins 5| and52, respectively, extending at right angles thereto (see Figs. 3 and 5)which are adapted to co-cperate with said projections 50 and 49respectively. The levers 4| are provided with projections 54 and 53 of adifferent shape than the projections 50 and 49 and also adapted toco-operate with the pins 5| and 52 on the wheels 2 and 3, respectively.

In Fig. '1 is diagrammatically shown, in which manner the pin 52 on thewheel 3 co-operates with the projections 49 and 53 on the levers 42 and4|. It is presumed that the pin 52 shown with full lines to the left ofFig. 7 is moving in the direction of the arrow 1 and assumessuccessively the positions 52a, 52c and 521) shown with dash-dottedlines. When the pin is in the position designated with 52a, the numeralwheel 2 will be in a position showing the numeral 9. In this positionthe lever 42 will be moved downwards from the position shown with fulllines to the position shown with dash-dotted lines, and this to such anextent, that the hook 43 will release the projection 44 on thebell-crank 34, 35. As, however, a hook 45a on the lever 45 pivoted tothe lever 4| is still in the path of movement of the projection 44 onthe bell crank 34, 35, the bell crank and thereby the toothed rack 31are not yet entirely released. Now, when the pin moves from the position52a to the position 522), that is, when the numeral wheel moves from 9to 0, the pin will, when it reaches the position 520, press against theprojection 53 on the lever 4| and move the lever 4| from the positionshown with full lines to the position shown with dash-dotted lines,whereby the hook 45a will be removed from the projection 44 on the bellcrank 34, 35, so that the toothed rack 31 influenced by its spring willsnap forwards a distance corresponding to one tooth of the toothed wheel2. The toothedrack 31 is thus moved from the position shown withdash-dotted lines in Fig. 5 to the position shown with full lines, therod 39 preventing the toothed rack 31 from coming into engagement withthe toothed wheel 2, before this toothed wheel 2 has finished itsrotation emanating from the return stroke of the toothed sector 5. Theforward movement of the toothed rack 31 is limited by the bell crank 34,35 engaging the rod 33 with its arm 35 (see Fig. 5). At the same time asthe bell crank 34, 35 rocks about the rod 30, the projection 35 on thearm 35 lifts the angular plate 41 belonging to thefollowing unit, thatis to say, the hook a Fig. 6 is removed from the projection 44 on thebell crank 34, 35 of the next following unit, so that this next unit isprepared for carrying out a tens-carrying operation, if this should berequired. By this arrangement, the movement of the number wheel of oneorder from 9 to zero releases the hook 45a that controls the carryingrack 31 of the next or second order, and the resulting forward movementof the rack 31 of the second order rocks its associated bell crank 34,35 to move the lever 45 to release the hook 45a of the control mechanismfor the rack 31 of the third order. This release of the hook 45a of thethird order control is thus efiected whenever a number is to be carriedinto the second order and whether or not the number wheel of the secondorderstands at nine at the beginning of the tens-carrying operation. Itis clear, that a similar action will be obtained, when the pin 5| on thetoothed wheel 2 is co-operating with the projections and 54, in case theapparatus is set for subtractions, that is to say when the bridges 4 arerocked about the studs 5 and provided said second order stands atnaught.

As stated above, the calculating mechanism proper is operativelyconnected with the lovers 3| through the intermediary of the cam disk 25and the bridges 29 in such a manner, that the rod 33 engages the arm 35,as soon as the sector 6 has reached its initial position and the wheels3 or 2, respectively, has been brought out of engagement with the sector6. The rod 33 will then press the arm 35 downwards and there by move thetoothed racks 31 backwards, whereby the numeral wheel I will be rotatedone tooth in the same direction, as when the sector 5 has been inengagement with the toothed wheel '3, and at the same time theprojection 44 will be moved behind the hooks 43 and 45a on the levers 42and 45 respectively. The spring 43 has been mounted between the angularplate 41 and the extension 42a on the lever 42 in such a manner, that ithas the tendency to rotate the levers 4| and 42 in counter-clockwisedirection about the rod I3. From the above it will be clear, that thetens-carrying operation is carried out compulsorily and on the otherhand is efiected, after the numeral wheels in the various units havebeen operated by the calculating mechanism proper, and thirdly that atthe same time the tens-carrying operation has been prepared for the nextfollowing unit, without being dependent on rotating parts.

The modified form of embodiment of the invention shown in Figs. 8-13differs from the first example with respect to the following parts. Eachorder has only one lever journaled on the rod |3 and provided withprojections 56, 55a for additions and 51, 51a for subtractions. Theprojections consist in this case of a combination of the projections 49,53 and 50, 54, respectively, that is to say, the portion 56 correspondsto the projection 49 in Fig. 6 and the portion 55a corresponds to theportion 53. The same is the case with respect to the projection 51, 51a.When the pin 52 (compare Fig. '1) is in the position corresponding tothe numeral 9 on the numeral wheel, it will be on the portion 56,whereby the lever 55 is pressed down so much, that its hook 58 isreleased from the projection 44 on the bell crank 34, 35. Instead of thelever 4| with the double-armed lever 45 pivoted thereto, a special bow59 has been provided, which is journaled on the rod 46 and is connectedwith the lever 55 by means of a spring 60. The shape of the bow 59 ismore clearly shown in Fig. 10. One leg of this bow has a locking hook 5l which cooperates with the same projection 44 which is arrested by thelocking hook 58. On the same leg is arranged a lateral projection 62which extends underneath the .lever 55. The other leg of the bow isprovided with an inclined control sura order for a: transfer.

face 63 which has the purpose, when a bell crank has been released, topress .down the bow of the next following order, so that'also in thiscase the tens-carrying mechanism for the third order is prepared by thefirst order through the intermediary of the secondorder. When the. pin52 thereafter moves to a position corresponding to the movementot thenumeral wheel from 9 to 0, the pin engages the projection 56a, wherebythe lever 55 is further pressed down and engages the lateral projection62 on the bow 59, so that the locking hook 6| on this bow is removedfrom the projectionll lon the bell crank 34, 35,.thus releasing the bellcrank, whereby the toothed rack 3'! influenced by its spring 39 willsnap forwards in the same'manner as described in connection with thefirst example.

The function of this tens-carrying mechanism is more clearly illustratedin Figs. 11-13, Fig. 11 showing the parts in their normal position.When, as shown in Fig. 12, the gear wheel with the pin 52 moves from 9to 0, that is at the moment when the pin 52 rides ontop of theprojection 56a, the lever 55 is pressed down to such extent that itsprolongation 65 operates the bow 59 which is turned about its pivot itin counter-clockwise direction, so that its hook El is freed from theprojection 44 on the bell crank 34 belonging to the next higher order.Inasmuch as the hook 58 on .the lever 55 has already'been removed fromthe same projection 54, ,the rack 31 is now displaced one step inforward direction by the action of the spring 39. By this movement ofthe bell crank 34 with the rack 37, the projection 44 cooperates withthe inclined surface 9311 on the bow 590i the third order underconsideration, so that this bow is rocked about its pivot and its hookBla is removed from the projection Me on the bell crank 34a of saidthird order, the bellcrank 3411 with the projection 44a and the rack 31abeing shown with dash-dotted lines in Fig. l2.

Referring'to Fig. 13, it is assumed that the numeral wheel of the unitorder movesfrom 9 to 0 and its pin 52 is just on top of the projection560, of the lever 55, the tens order being in the '7 position, pin 52a,and the hundreds order being in the 2 position, pin 5%. The lever 55, 55is pressed down, its hook 58 and also the hook Bl on the bow 59 areremoved from the path of the projection 34 on the bell crank 34-belonging to thetens order. This bell crank 34 moves forwards and itsprojection is glides on the inclined surface 63a and thereby'brings thebow 59a of the tens order to rock about its pivot 46 incounter-clockwise direction with the consequence that its hook Eta isfreed from the projection 44a. on the bell crank 34a of the hundredsorder. As, however, the numeral wheel of the tens order stands inthe '7position, the pertaining pin 5211 does not affect the lever 55a andtherefore the hook 580.. detains the projection 44a on said bell crank34a, so that a transfer to the hundreds order does not take place.Should the numeral wheel of the tens order also be moved to the 9position or beyond this position, then the hookiiila. frees saidprojection Ma and the bell crank 840/. snaps forwards with theconsequence that the bow 59b belonging to the hundreds order is rockedthroughthe intermediary of the projection 44a and the inclined surface63b. In this case the hook Bib is removed from the projection 4411 onthe bell crank 3 th belongingto the thousands order, thus preparingthisIn the. description of the two examples, refer ence has been made to afirst, second and third order;.. This, ho.wever, does not mean, thatonly the first three. orders of a' counter come into consideration, butit is the question of three successive orders, and these orders may beany of a counter, for instance the three last orders of a counter. In.the example-shown in Fig. 2 the counterhas nine orders, and of theseunits any three orders situated side by side will be operated in themanner above referred to. It is furtherto be observed, inasmuch asalways any threeorders of a counter are concerned, that thetens-carrying operation may thus be carried out on all orderssimultaneously and compulsorily. This arrangement is of great importancein counters having a great number of orders, especially when all ordersare simultaneously moved from the numeral 9 to the numeral 0. Theconstruction according. to the present invention, therefore, is not onlysuitable for calculating machines, cash registers and the like, but maywith the same advantage also be applied to any counter whatsoever, inwhich the first order only is operated, for by the special arrangementof preparing not only the second order but also the third and thefollowing orders, counters having a great number of orders will besimultaneously prepared for a tens-carrying operation in all orders andalso the tens-carrying operation will be carried out in all orders, sothat a play between the teeth of the gearings will have no eiiect on theproper function of the tens-carryingmechanisms.' The invention isfurther not limited to the details described and shown on the drawings,and the details may be modified without thereby limiting the scope ofthe invention. Thus, for instance, the toothed rack 37 may have the formof asector or ofa toothed wheel, and the spring influencing the variousparts may be of another form or may be arranged in another manner thanshown on the drawings.

What I claim is:--

1. Transfer mechanism for counters adapted for carrying .and borrowingoperations, compris ing a plurality ofsets of two gear wheels meshingwith each other, actuating means. therefor, transfer means for each setof ear wheels except that. of the units denomination, means to bringeither of said gear'wheels into and out of engagement with its transfermeans, two sets of detent means for retaining eachof said transfermeans, means including one of said gear wheels for actuating said detentmeans of the next adjacent denomination to free the transfer meansthereof. 7 I

2. Transfer mechanism for counters adapted for carrying and borrowingoperations, comprising'counter mechanism for each denomination includingtwo gear wheels meshing with each other, a reciprocating transfer memberfor each denomination except units, two sets of means to detain each ofthe transfer'members in inoperative position, means tobring either gearwheel into and out of engagement with its transfer member, each gearwheel being provided with means to operate the detaining means of thenext adjacent denomination to release its trans fer member when thelatter is out of engagement with its gear wheels, and'means to returnsaid released transfer member to its initial position to-eifectatransfer.

3. Transfer mechanism for counters adapted for. carrying and borrowingoperations, comprising twogear wheel'smeshing with each other andcooperating with the respective counter wheels of a plurality ofdenominations, a reciprocating transfer member for each denominationexcept units, two sets of means to detain each of the transfer membersin inoperative position, means to bring either gear wheel into and outof engagement with its transfer member, each gear wheel being providedwith means to operate the detaining means controlling the transfermember of the order next higher than that of said each gear wheel, torelease said transfer member when the latter is out of engagement withits gear wheels, means to return said released transfer member to itsinitial position to effect a transfer, and means to couple one of saiddetaining means controlling the transfer member of each otherdenomination with the transfer member of the next lower denomination.

4. Transfer mechanism for counters adapted for carrying and borrowingoperations, comprising a plurality of sets of two gear wheels meshingwith each other, a denomination wheel actuated by each set of gearwheels; a reciprocating transfer member for each denomination except theunits, means to: bring either gear wheel into and out of engagement withits transfer member, two detaining members to detain the transfermembers in inoperative position, each gear wheel being provided withmeans operative when the transfer members are out of engagement with thepertaining gear wheels to actuate one detaining member to partly freethe transfer member of the denomination next higher than that of theactuating gear wheel when the denomination wheel of said actuating gearwheel stands at respectively 9 or and to operate the associated seconddetaining member to wholly free the transfer member when the saiddenomination wheel moves respectively from 9 to 0 'or from 0 to 9, andmeans to return a release transfer member to its initial position toeffect a transfer.

5. Transfer mechanism for counters adapted for carrying and borrowingoperations, comprising a plurality of sets of two gear wheels meshingwith each other, a denomination wheel actuated by each of said sets, areciprocating transfer member for each denomination except the units,means to bring either gear wheel into and out of engagement with itstransfer member, two detaining members to detain each transfer member ininoperative position, each gear wheel being provided with meansoperative, when the transfer members are out of engagement with thepertaining gear wheels, to actuate one of said detaining members topartly free the transfer member of the denomination next higher thanthat of the actuating gear wheel when the denomination wheel of saidactuating gear wheel stands at respectively 9 or 0 and to operate theassociated second detaining member to wholly free said transfer memberwhen the said denoiruation wheel moves respectively from 9 to 0 or from0 to 9, means to return 9. released transfer member to its initial position to effect a transfer, and means to couple said second detainingmember for detaining the transfer member of any one denomination withthe transfer member of the next lower denomination.

6. Transfer mechanism for counters adapted for carrying and borrowingoperations, comprising a plurality of sets of two gear wheels meshingwith each other, a denomination wheel actuated by each of said sets, areciprocating transfer member; for each denomination except units, meansto bring either gear wheelv into and out of engagement with its transfermember, two detaining members to detain each transfer member ininoperative position, the gear wheels being provided with meansoperative, when the transfer "members are out of engagement with thepertaining gear wheels, to actuate one of the detaining members topartly free the transfer member of the denomination ne't higher thanthat of the said actuating gear wheel when the denomination wheel of thesaid actuating gear wheel stands at respectively 9 or 0 and to furtheractuate the same said detaining member when the said denomination wheelmoves respectively from 9 to 0 or from 0 to 9, the said one detainingmember adapted to opcrate its associated second detaining member towhollyfree said transfer member when the first-named detaining member iswholly operated, and means to return said released transfer member toits initial position to effect a transfer.

7. Transfer mechanism for counters adapted for carrying and borrowingoperations, comprising a plurality of sets of two gear wheels meshingwith each other, a denomination wheel actuated by each of said sets, areciprocating transfer member for each denomination except the units,means to bring either gear wheel into and out of engagement with itstransfer member, two detaining members to detain each transfer member ininoperative position, each set of gear wheels being provided with meansoperative, when the transfer members areout of engagement with thepertaining gear wheels,'to actuate one of the detaining members topartly free said transfer member of the denomination next higher thanthat of the actuating gear wheel when the denomination wheel of the saidactuating set of gear wheels stands at'respectively 9 or 0 and tofurther actuate the same said detaining member when the denominationwheel moves respectively fr0m 9 to 0 or from 0 to 9, its associated onedetaining member adapted toopcrate the associated second detainingmember to wholly free said transfer member when the firstnamed detainingmember is wholly operated, means to return said released transfer memberto its initial position to effect a transfer, and means to couplesaid'second detaining member for detaining the transfer member of anyone denomination with the transfer member of the next lowerdenomination.

8. Transfer mechanism for counters adapted for carrying and borrowingoperations, comprising a plurality of sets of two gear wheels meshingwith each other and provided with a transfer pin, a denomination wheelactuated by each of said sets of gear wheels, a spring actuatedreciprocating transfer rack for each denomination except units, means tobring either gear wheel into and out of engagement with its transferrack, a right angled lever for each transfer rack and pivoted at theangle, each transfer rack pivoted to one arm of its lever, a projectionon each lever, pivoted latches normally engaging the said projections,the latch of each denomination being provided with cam surfaces tocooperate with either of said transfer pins of the gear wheels of thenext lower denomination to free said projection when the pertainingnumeral wheel stands at respectively 9 or 0, double armed latch levers,normally engaging the said projections of 7 gear wheels to free theprojection which normally locks the right-angled lever and transfer rackof the next higher denomination when the numeral wheel of the set ofgears cooperating with thesaid' pivoted arm moves respectively from 9,to

g or from- 0 to'9 and a transverse rod to positively return saidreleased, transfer racks to their initial positions, whereby transfersare effected.

9. Transfer mechanism for counters adapted for carrying and borrowingoperations, comprisinga plurality of sets of two gear wheels meshingwith each other and provided with a transfer'pin,

a denomination wheel actuated by each of said sets of gear wheels, aspring actuated reciprocating transfer rack for each denomination exceptunits, means to bring either gear wheelof a set into and out ofengagement with its transfer rack, a pivoted arm pivetally'connected toeach of said transfer racks, a projection on each said arm, two pivotedlatches normally engaging each of a the said projections, the firstlatch of each set being provided with a' right-angled extension tocooperate with the second latch, said'second latch of each set beingprovided with two double cam surfaces, the lower cam surfaces of thesecond latch associated with'the projection on the pivoted armcooperating withfthe transfer rack of one order being adapted tocoop'erate with either of said transfer pins of the-gear wheels of thenext lower order to free the said'p'rojection-on' the pivoted arm ofthe-said one order from said secondlatch when the-pertaining numeralwheel ofsaid next lower order stands at respectiyely 9or 0,thea'ssociatecl higher cam surfaces being adapted to cooperate witheither of said transfer pins of the said-next lower order to actuatesaid first-- named latch to remove the same from said; projection whenthe "said pertaining numeral'wlieel moves respectively from 9 to O orfrom" 0 to 9; said first named' latch provided with a cam' surfaceadapted to'cooperate withtlie said projection'of the said next lowerdenomination, and

a transverse rod to positively return said released tra'nsferracks totheir initialpositions whereby transfers are effected. w H lOfIn acalculating machine; the combination With a series of countermechanisms, means for selectively setting said counter mechanisms, andoperating means for' simultaneously engaging said counter mechanisms toactuate thesame, of transferelcments arranged between adjacent countermechanisms, means mounting said transfer elements for movement frominactive position to active position, means normally locking saidtransfer elements in inactive position, means actuated by the movementof one of said counter mechanisms through the nine-zero interval andwhile engaging said operating means, for releasing the locking means forthe next higher (second 11. In a calculating machine, the combinationwitha" series of counter mechanisms of a trans-- fer mechanism betweeneach pair of adjacent counter mechanisms, each of said transfermechanisms comprising means for ct-uating the corresponding countermechanism, means actuated by the movement of any given counter mechanismthrough the nine-zero interval for preparing the transfer mechanism ofthe next higher counter mechanism for a tens-transfer from the saidgiven counter mechanism and for prelirninarily preparing the transfermechanism controlling the second higher counter mechanism for atens-transfer to the said second higher counter mechanism, and meansactuated by the movement of the said next higher coun er mechanism intoor through the nine position prior to the transfer operation to preparethe second higher transfer mechanism for a transfer thereto.

12'. In a calculating machine, the combination with a series of ordermechanisms each comprising a counter mechanism, actuating means thereforand means mounting said counter mechanism for movement into and out ofengagement with said'actuating mechanism, of a transfer mechanismbetween adjacent order mechanisms, operating means for actuating saidmounting means to move said counter mechanism successively intoengagement with said actuating means and said transfer means, twoseparate locks for normally rendering each transfer mechanism 7inactive, means actuated by the movement of the counter mechanism of oneorder to nine to release one lock'of the transfer mechanism of the nexthigher order, and means actuated by the movement or" the first countermechanism through the 9-0 interval to release the second of said locksof the transfer mechanism of both the next and the second higher order.

GUSTAF HILARIUS HELLGREN.

CERTIFICATE OF GORRECTKON Patent N0. 2, 008,355. July 16, 1935.

GUSTAF HILARIUS HELLGREN.

It is hereby certified that error appears in the printed sp-scification6f the above numbered patent requiring correction as fallows; ?age 6,first coiumn, iine l, ciaim 8, strike out the Word "denomination"; andthat the said Letters Parent should be read with this correction thereinthat the t0 the record of the case in the Patent Office.

Signed and sealed this 20th day of August, A. I 1935.

same may conform Leslie Frazer (Seal) Acting Cummssionar of Patents.

CERTIFICAI'E OF CORRECTION Patent No. 2, 008,355. July 16, 1935.

GUSTAF HILARIUS HELLGREN.

it is hereby certified that error appears in the printed specificationof the above numbered patent requiring eerrection as fellows; Page 6,first column, time i, ciaim 8, strike out the word "denomination"; andthat the said Letters Patent should be read with this correction thereinthat the same may conform to the record of the case in the PatentOffice.

Signed and sealed this 20th day of August, A. I). 1935.

Leslie Frazer (Seal) Acting Commissioner of Patents.

